Remove travis

Signed-off-by: Ulysses Souza <ulyssessouza@gmail.com>

.travis.yml

@@ -1,20 +0,0 @@
-sudo: false
-language: python
-matrix:
-  include:
-    - python: 2.7
-      env: TOXENV=py27
-    - python: 3.5
-      env: TOXENV=py35
-    - python: 3.6
-      env: TOXENV=py36
-    - python: 3.7
-      env: TOXENV=py37
-      dist: xenial
-      sudo: true
-    - env: TOXENV=flake8
-
-install:
-    - pip install tox==2.9.1
-script:
-    - tox